Coal-hoisting machine or dredge



{No Model.)

B. M. MUNN.

GOAL HOISTING MAGHINE 0R DREDGE.

Patented Aug. {1, 1885.

Y MENTOR:

ATTORNEYS.

WITNESSES BERNARD M. MUNN, OF ELIZABETH, NEV JERSEY.

COAL-HOISTING MACHINE OR DREDGEL.

SPECIFICATION forming part of Letters Patent No. 323,589, dated August4, 1885.

Application filed February 18, 1835.

To aZZ whom, it 72mg concern:

Be it known that I, BERNARD M. MUNN, of Elizabeth, in the county ofUnion and State of New Jersey, have invented a new and ImprovedGoal-Hoisting Machine or Dredge, of which the following is a full,clear, and exact description.

'lhisinvcntion relates to a machine designed more especially forelevating coal; and the invention consists in certain novelconstructions, combinations, and arrangements of par will be hereinafterdescribed,and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming part ofthis specification,in which similar letters of reference indicatecorresponding parts in all the figures.

Figure l is a sectional side elevation of my invent-ion, showing thebucket elevated and open. Fig. 2 is a sectional rear elevation ofa partof the machine, showing the engines and mechanism for revolving thehoisting-drums and swinging the boom. Fig. 3 is a plan view of a part ofthe mechanism,showing the hoisting and turning gearing for the boom.Fig. 4 is a side elevation of the outer end of the boom and the bucket,the latter being shown in closed position; and Fi 5 is a sectionalelevation taken on the lineman of Fig. 4L.

In constructing my new coal-hoisting or dredging machine I prefer toemploy a frame, A, for supporting the main upright or mast .3. The frameA is composed in this instance of the two side pieces a a and the upperand lower plates, a a and the frame is supported in this instance by thefixed stud G. The mast B is hollow and is braced by suitable rods 13,and is provided at its upper end with two pulleys,b b, over which thecable D,leading from hoisting-drum E to the outer pulley, b,of the boomF, passes. To the outer end of the boom F is attached, upon transverserod or shaft f, the bucket G, and the inner end of the boom is bypreference held in the crosspiece h of a frame, H, composed of the saidcross-piece h and the side pieces h h, which latter are pivoted upon themain power-shaft J. The boom F is by preference made hollow, so that thebucket-cable K may pass through it, as shown in Fig. 1, to prevent thecable from sagging. The said bncketcable K passes over the drum it,placed on shaft 7:,

(No model.)

journaled in the side pieces h of the frame H, and from the drum thesaid cable passes along or through the boom F over pulley I) at theouter end of the boom, thence down to the drum 7;,tixed upon the shaftgflheldin and between the side pieces or plates, g g, of the bucket G;and this cable K is for opening and closing the hinged scoops g 9 thatcompose or constitute the bucket proper.

The bucket G, as a whole, is composed of the said scoops 5/ 9, sideplates, 9' g',transversc shaftsf and g and the opening and closing arms9, four in number. The side plates, g, are longitudinally slotted, asshown at i, and are placed upon the ends of the transverse shaft f, theends of the shaft passingthrough the slots 2, as shown clearly in Fig.5, and to the lower ends of the said side plates, g, the scoops g areoppositely hinged upon the studs 6. (Shown in Figs. 1 and 4.) Theopening and closing arms g are also attached at their upper ends to thesaid transverse shaft f, and at their lower ends they are hinged orpivoted by the studs 1' to the outer and upper edges of the scoops 9, sothat when the side plates, 9, are lowered {by letting away upon thecable K) from the position shown in Fig. 4 to that shown in Fig. 1 thearms y, being relatively stationary at their upper ends, will operate tohold the upper edges of the scoops 9, while the plates y act to spreadand open them away from each, other at their lower edges. By drawing inupon the cable K the side plates, 9, will be lifted and the oppositeaction will take placethat is, the arms 9" will hold the upper and outeredges of the scoops relatively stationary, (save a slightoutwardmovement in a curve,) while the plate y will operate to draw the scoopstogether to close them, as shown in Fig. 4.

The letting out and drawing in of the cable K for thus opening andclosing the scoops is effected in this instance by the above-mentioneddrum It on shaft k, which latter is revolved continuously from the mainshaft J by small gear-wheel j on shaft J and larger gearwheel j on shaftk. The shaft J is revolved in this instance by the steam-engines L L,attached to the sides of frame A, and connected to the opposite cranks,j j, of the said shaft J by connecting-rods and crossheads j j. The drum7: is loose upon shaft la, and in this in stance is adapted to have aslight longitudinal movement on the shaft for clutching it with andreleasing it from the cone formed upon the shaft 70. The end of the drumnext to the cone k is slightly recessed to fit the cone it and I providethe frame H with the lever M for moving the drum longitudinally upon theshaft, so that by simply operating the lever M this drum may be made torevolve with the shaft 70 for winding up the cable K for closing thescoops g, or released from the shaft to revolve thereon to let out thecable K for opening the said scoops g. The drum E, over which the cableD passes, is placed loosely upon the shaft N, journaled in the sidepieces a of the frame A, and the shaft N is adapted to be revolved fromthe main power-shaft J by the small gear-wheel Z fixed on the powershaftand the larger gear-wheel Z fixed on shaft N. The shaft N has the cone mformed upon it, and the drum E is adapted to be moved longitudinally onthe shaft N by the lever O for clutching the drum with the cone m, forcausing the drum to revolve with the shaft or releasing the drum fromthe cone so that the drum may turn freely upon the shaft. WVhen thedrunr N is moved upon the cone 1%, the drum will revolve with the shaftand wind up the cable D and lift the outer end of the boom 13, and whenthe drum is moved off from the cone the weight of the boom and bucket Gupon the cable will lower the boom and bucket to the body of coal orother material to be lifted.

Upon the upper end of the fixed stud O, I secure the beveled cog-wheelP, and upon the power-shaft J, I place loosely the beveled cogwheels QQ, that mesh with opposite sides of the gear-wheel P. The wheels Q eachhave a clutch, q, formed upon their inner surfaces, and upon the shaftJ, between the clutches q q of the wheels Q, is placed the slidingclutch R, that is attached to the shaft by a key or spline. (Shown indotted lines in Fig. 2.) The clutch B may be moved upon the shaft J toengage with either of the clutches q, so that by means of the slidingclutch It either of the cog-wheels Q may be made to revolve with theshaft J, so that the power of the engines L may be used or applied forturning the whole machine bodily upon the stud O for swinging the boom Fand bucket G from the place of loading to and from the place of dumping.

By adapting the parts 9 of the bucket G to be opened and closed asdescribed, in order to fill them (the parts being open) it is only'necessary to lower the boom F untilthe edges of the open scoops of thebucket rest upon the then to shift the drum It so as to clutch it withshaft k, and thus cause the cable K to be wound upon the drum, whichwill elevate the side pieces g and close the scoops, as above described,and cause them to be filled with the coal or other material. This done,the drum E will be shifted to clutch it to shaft N, which will wind incable D and elevate the boom F and loaded bucket G. When elevated to theproper height, the clutch R will be shifted to engage the clutch q ofone of the wheels Q, which will cause it to revolve with the mainpower-shaft J, and, meshing with fixed gearwheel P,will cause the wholemachine to turn on stud G, which will swing the boom F and other wheelQ, which will cause it to turn with the shaft J, and cause the wholemachine to turn back on stud C, swinging the boom F and bucket G backfor another load. In this manner all handling of the coal or othermaterial with shovels is avoided, saving much time and labor.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

l. The side plates, 9, slotted, placed on shaft f, and having the scoopsg pivoted to them, in combination with arms 9', and the cable K forraising and lowering the plates 9 for opening and closing the scoops g,substantially as and for the purposes set forth.

2. In a hoisting-machine, the drum k, cable K, boom F, and means forrevolving the drum k, in combination with the vertically-movable platesg, arms 9", and scoops 5 all arranged to operate substantially as andfor the pur- 10o poses set forth.

3. In a hoisting-machine, the hinged frame H, drum 7c, and boom F, incombination with cable K, and side plates, g, to which the cable isattached for operating the scoops of the 105

